55509554641 has 4 divisors (see below), whose sum is σ = 55754090352. Its totient is φ = 55265018932.

The previous prime is 55509554627. The next prime is 55509554687. The reversal of 55509554641 is 14645590555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55509554641 - 2⁹ = 55509554129 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55509554741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122267515 + ... + 122267968.

It is an arithmetic number, because the mean of its divisors is an integer number (13938522588).

Almost surely, 2^55509554641 is an apocalyptic number.

It is an amenable number.

55509554641 is a deficient number, since it is larger than the sum of its proper divisors (244535711).

55509554641 is a wasteful number, since it uses less digits than its factorization.

55509554641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244535710.

The product of its (nonzero) digits is 2700000, while the sum is 49.

The spelling of 55509554641 in words is "fifty-five billion, five hundred nine million, five hundred fifty-four thousand, six hundred forty-one".